Banca de DEFESA: FRANCISCO EMANUEL DA SILVA
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.STUDENT : FRANCISCO EMANUEL DA SILVA
DATE: 22/05/2024
TIME: 09:00
LOCAL: video conferência
TITLE:
Nanostructured mesoporous materials with different morphologies: Support for co2 conversion catalyst
KEY WORDS:
SBA-15; KIT-6; Morphology; CO2; Hydrogenation; Methanol
PAGES: 109
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Físico-Química
SPECIALTY: Cinética Química e Catálise
SUMMARY:
Carbon dioxide has been the subject of many global discussions due to its great impact on the planet's impact on the planet, among many sources of emissions is the oil and energy industry. There are many alternatives on how to reduce this problem, for example, hydrogenation to produce methanol. This is a profitable process, which has attracted many studies, such as the use of silica supports for anchoring copper, zinc and zirconium-based catalysts. Among these supports there are nano-structured mesoporous materials such as SBA-15 and KIT-6, which due to their textural properties, among others, have attracted a lot of attention in this process. These properties can be improved through the change in morphology, which occurs through its synthetic process. Thus, the objective of this work is to synthesize nanostructured mesoporous materials of the SBA-15 type in different morphologies and KIT-6, in order to obtain different textural properties, to be used in the hydrogenation of carbon dioxide (CO2) to obtain Methanol, using hydrothermal synthesis at different reaction temperatures. The materials were characterized using x-ray diffraction, N2 adsorption and desorption, Scanning Electron Microscopy (SEM) and Furrier transform infrared (FTIR). Materials in different morphologies were successfully obtained, with different textural properties, such as specific area, external area, porous volume, pore diameter and wall thickness and their influence on the material structure, such as mesoporous parameter and chemical groups. existing on the surface of the material. CO2 adsorptions were carried out to evaluate the adsorption capacity of each material. The reactions were carried out for conversion to obtain methanol and each product was identified using gas chromatography.
COMMITTEE MEMBERS:
Externa à Instituição - ANNE GABRIELLA DIAS SANTOS - UERN
Interno - 350509 - ANTONIO SOUZA DE ARAUJO
Externa à Instituição - MARIELE IARA SOARES DE MELLO - UFRN
Externa à Instituição - MELISSA GURGEL ADEODATO VIEIRA
Presidente - 1308577 - SIBELE BERENICE CASTELLA PERGHER